Electronic variable speed. Soft-start for improved operator control. Die-cast aluminum gear housing. Extended rear handle design for balance. Two position auxiliary handle. Lock-on switch for extended use. Spindle lock for quick accessory changes. Converts easily from a sander to a polisher. No load speed of 600 to 3000 rpm. Wheel size of 7 in (185 mm). Arbor size of 5/8 in-11. Weighs 7 lb. Accepts all standard 7 in sanding and polishing accessories. Includes 7 in foam polishing pad, hook and loop backer pad, one 7 in sanding disc, rubber backing pad, wrench and assist handle.